高二英语Unit13—TheWaterPlanet(I)人教版【本讲教育信息】一.教学内容:Unit13—TheWaterPlanet(I)二.重点词汇讲解:难点句解析三.知识总结归纳:单元内容介绍:主题:水的星球。涉及:水的化学结构,物理性质,水的用途,入海口,海洋等。阅读材料:ThePropertiesofWater:水的特性。介绍了水的化学结构及性能,海水的含盐量,密度,热容量以及海水的运动。Nature’sNursery:estuaries:介绍了河流的入海口有着丰富的生态资源,对动植物有着重要作用。语法复习:复习情态动词的用法。四.重要词汇讲解:1.benefit:使……受益;利益;常用的短语:benefitfrom:从……受益Whobenefitsfromusingwaterinthisway?HisEnglishbenefitedfromhislongassociationwithBritishchildren..AtomscienceisbeingdevelopedinChinatobenefitthepeopleratherthanharmthem.China’seconomicreformsaretothebenefitofthewholenation.2.range:在一定范围内变化。固定短语:rangefrom….to…:从……到……不等Lifeintheoceansrangesfromthetiniestplanktonallthewayuptogiantslikesharksandwhales.Pricesrangedfrom5dollarsto10dollars.Theiragesrangefrom12to25.range还有“射程;可达到的距离或范围”的意思。Thegoalisoutofrange.3.relative:相对的;比较而言thepositionofthesunrelativetotheearthGiventhefailureofthepreviousplan,thisturnedouttobearelativesuccess.Lackofexerciseisalsoariskfactorforheartdiseasebutit’srelativelysmallwhencomparedwiththeothers.4.absorb:吸收:absorbedinsth.:被……吸引;全神贯注于……Watercanabsorbandgiveoffalotofheatwithoutbigchanges.Sheseemedtotallyabsorbedinherbook.5.freezing:冰冻的,极冷的;冰点:freezingpoint;I’mfreezing.用心爱心专心frozen:冷冻的,冷藏的;冻僵;结冰的:Thegroundwasfrozensolid.6.sensitive:敏感的,灵敏的sensible:明智的;通情达理的:Mostofanimalsandplantsaresensitivetolargeorsuddenchangesintemperature,sotheoceanissafeandcomfortablehabitat.Usually,Iamsensiblewithmoney,asIhavetobe,giventhatIdon’tearnthatmuch.7.callin:召集,打电话callon:拜访,某人callat:拜访某地callup:使某人想起……8.giveoff:释放;放出(液体,气体,烟雾)Hefoundthaturaniumcouldgiveoffcertainrays.giveout:发出(声音,光,电,热,信号);用尽;分发Thebirdgaveoutapleasantsound.Thewaterwillgiveout.giveaway:馈赠;giveup:停止;放弃;givein:屈服从构词角度理解并适当扩展下列单词:mariner;transport;unique;relative;freezing;decrease;reproduce;pollutant五.难点句解析:1.Waterisactuallyquitesimple,butthewaythewatermoleculeisformedgiveswateritsuniqueproperties.水实际上很简单,但是水分子形成的方式赋予了水的独特性能。thewatermoleculeisformed是定语从句修饰theway,在这里省略了关系词。theway作为先行词后面的定语从句的引导词有that;inwhich;或省略关系代词。Idon’tunderstandtheway(that/inwhich)heworkedouttheproblem.2.Thenutrientsinwhateverfallsintotheoceanquicklybecomeavailabletootherlivingcreatures.任何落入海洋的物质中的营养物都会很快被其他生物所吸收利用的。whateverfallsintotheocean作为宾语从句做介词in的宾语。Whatever引导名词性从句,表示:任何……东西。Youcaneatwhateveryoulike.Whateverisleftisyours.available:可用的,可以得到的.Chinesecommoditiesavailableforexportarevaried.I’msorry,thoseovercoatsarenotavailableinyoursize.Attention,please.Theseticketsareavailableonthedayofissueonly.3.Ifasubstancehasahigherdensity,say5,000kg/m3,itwillnotfloatonwater.假如一个物质密度更大,比方说每立方米5,000千克,那它就不会浮在水面上。say:设想,假定,比如说。Let’ssaythatyouareright.用心爱心专心Sayyouareaway,whowouldlookafteryourmother?Let’stakeanywriter,sayDickens…4.Heatcapacityistheamountofe...